package com.edee.bigday.commodity.exception;

import com.edee.common.exception.BizCodeEnume;
import com.edee.common.utils.R;
import lombok.extern.slf4j.Slf4j;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;

import java.util.HashMap;
import java.util.Map;

/**
 * 集中处理所有异常
 */
@Slf4j
//@ControllerAdvice(basePackages = "com.edee.bigday.commodity.app")
//@ResponseBody
//下面的@RestControllerAdvice是上面的@ControllerAdvice和@ResponseBody的合并：
@RestControllerAdvice(basePackages = "com.edee.bigday.commodity.app")
public class BigdayExceptionControllerAdvice {

    //精确异常1——数据校验异常：
    @ExceptionHandler(value = MethodArgumentNotValidException.class)
    public R handleValidException(MethodArgumentNotValidException e) {
        log.error("数据校验异常{}，异常类型{}", e.getMessage(), e.getClass());
        BindingResult bindingResult = e.getBindingResult();
        Map<String, String> errorMap = new HashMap<>();
        bindingResult.getFieldErrors().forEach((fieldError) -> {
            errorMap.put(fieldError.getField(), fieldError.getDefaultMessage());
        });
        return R.error(BizCodeEnume.VALID_EXCEPTION.getCode(),BizCodeEnume.VALID_EXCEPTION.getMsg()).put("data",errorMap);
    }

    //如果上面的精确异常无法匹配，就交给下面的模糊异常处理：
    @ExceptionHandler(value = Throwable.class)
    public R handleException(Throwable throwable){
        return R.error(BizCodeEnume.UNKNOWN_EXCEPTION.getCode(),BizCodeEnume.UNKNOWN_EXCEPTION.getMsg());
    }
}
